To determine whether your windows are drafty, try placing a burning candle by the window's edge on a cold day and see if the flame flickers. Although you need to spend money on repairs, it will help save on energy bills in the long run.
I own an old house, and the problems just seem to be endless. I called Andy at my wits end with a leaky roof, and a laundry list of other semi-urgent small jobs.
Andy showed up the same day, and...
Andy was prompt, paid attention to detail, made useful suggestions and completed the job in a timely manner. He also fixed a small problem beyond the scope of the project at no additional cost.